Callstack
visit site- $25,000+
- 10 - 49 employees
- Wrocław, Poland
Callstack is an app development firm. The small Wrocław, Poland-based team offers mobile app development and web development. The firm was launched in 2016.
Client Insights
Industry Expertise
This provider has not added their industry expertise.
Client Size Distribution
Small Business (<$10M) 30%
Midmarket ($10M - $1B) 40%
Enterprise (>$1B) 30%
Common Project Size
$50K-$199K 2 projects
Clients
This provider has not added their key clients.
Highlights from Recent Projects
Callstack was hired by a fintech company to migrate their super app and mini app to Re.Pack. The project also involved creating an in-house development platform, preparing documentation of the migration process and conducting an upskilling workshop for the company's developers. The decision to hire Callstack was made based on their high level of technical skills. The project was divided into four main deliverables and was completed successfully by one software engineer from Callstack.
For a digital solutions provider, Callstack was hired to modernize their WorkflowGen mobile app, improve the overall performance and UI/UX and migrate its existing architecture. The goal was to make the codebase easier to maintain, upgrade previously used libraries, and improve the development velocity of new features. The selection of Callstack was influenced by their technical skills and their team's responsiveness. The project was completed by two front-end developers from Callstack who worked closely with the company's in-house developers. They refreshed various elements of the app and made changes to its code, which led to an improvement in performance and UI/UX.